[Bindings] Create and use V8 context snapshots

third_party/WebKit/Source/core/workers/WorkerBackingThread.cpp

Index: third_party/WebKit/Source/core/workers/WorkerBackingThread.cpp
diff --git a/third_party/WebKit/Source/core/workers/WorkerBackingThread.cpp b/third_party/WebKit/Source/core/workers/WorkerBackingThread.cpp
index d21557b9f79bce9483fddb0c92e0319aea2e00e4..4c53f8e0d981cd9b5d8c92bc700928035a3cb4f9 100644
--- a/third_party/WebKit/Source/core/workers/WorkerBackingThread.cpp
+++ b/third_party/WebKit/Source/core/workers/WorkerBackingThread.cpp
@@ -9,6 +9,7 @@
 #include "bindings/core/v8/V8GCController.h"
 #include "bindings/core/v8/V8IdleTaskRunner.h"
 #include "bindings/core/v8/V8Initializer.h"
+#include "bindings/core/v8/V8SnapshotUtil.h"
 #include "core/inspector/WorkerThreadDebugger.h"
 #include "platform/CrossThreadFunctional.h"
 #include "platform/RuntimeEnabledFeatures.h"
@@ -60,8 +61,12 @@ WorkerBackingThread::~WorkerBackingThread() {}
 void WorkerBackingThread::Initialize() {
   DCHECK(!isolate_);
   backing_thread_->Initialize();
+  // TODO(peria): Replace GetReferenceTable with nullptr.
+  // (http://crbug.com/v8/6448)
   isolate_ = V8PerIsolateData::Initialize(
-      backing_thread_->PlatformThread().GetWebTaskRunner());
+      backing_thread_->PlatformThread().GetWebTaskRunner(),
+      V8SnapshotUtil::GetReferenceTable(),
+      V8PerIsolateData::V8ContextMode::kDontUseSnapshot);
   AddWorkerIsolate(isolate_);
   V8Initializer::InitializeWorker(isolate_);